Means for controlling the temperature of plate-casting boxes.



H. F. B ECHMAN. MEANS FOR CONTROLLING THE TEMPERATURE OFPLAJTE CASTING BOXES. APPLICATION flLiD. APR. 17, I9l5- RENEWED FEB. 16.1916.

Patented Sept. 12,1916.

To all whom it may concern i The box shown in the drawings is, a so boxes of the type shown in my 945,67 8, of January 4, 1910, but is applicable UNITED stains rarnnr orrron HENRY. F. BECHMAN, 0F BATTLE CREEK, MICHIGAN, ASSIGNOR T0 DUPLEX PRINTING- ]?RESS COMPANY, OF BATTLE CREEK, MICHIGAN, A CORPORATION OF 'MICHIGAN.

\ v MEANS FOR CONTROLLING THE TEMPERATURE OF PLATE-CASTING- BOXES.

Specification of Letters Patent. Patented Sept. T2,'ll9Tfi.

Application filed April 17, 1915, Serial No. 22,153. Renewed February 16, 1916. Serial No. 78,780.

Be it known that I, HENRY F. B OHMAN, a citizen of the United States, residing at Battle Creek, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Means for,

Controlling the Temperature of Plate -Castin Boxes; and I hereby declare that the fofiowing is a'full, clear, and exact description thereof, reference being hadto the accompanying drawings, which form part of this specification.

This invention relates to stereotype plate casting boxes, and its object is to provide means for maintaining the parts of the casting box at a temperature most suitable for plate casting While preventing overheating thereof, by maintaining a body of water, or other suitable medium, at a temperature aproximating the boiling point within the iiollow portlons of the castlng box subjected to most direct contact with the molten stereotype metal, .so that such parts will be protected from injury and maintained at such a substantially uniform temperature as will enable plates to be cast in such boxes more uniformly and with greater rapidity than has been heretofore practical with casting boxes of the same general type but to which this invention has not been applied.

The invention is particularly designed for use in connection with stereotype casting to other forms of plate casting boxes and I will explain the invention as applied to such a casting box particularly designed for'casting tubular plates. I I

In the accompanying drawings forming part of the specification; Figure 1 is a sec tional elevatlon of part of such a casting.

box showing the temperature regulating means. Fig. 2 is a detail sectional view showing the box core in position for removing a cast plate. Fig. 3 is a detail transverse section of such a box on line 33,-Fig. 1.

called tubular plate casting box'of. the type shown in my aforesaid'patent, and comprises a base 7 -to which are secured side atent N 0.

The core'2 is mounted on trunnions3 journaled in the side frames 9, so that said core can be swung or tilted to a position axially of the said chamber, (Figs. 1 and 3) when a plate is to be cast; or when the box is opened can be tilted outwardly to a substantially horizontal position, as indicated in Fig. 2, to facilitate the removal of the cast plate. The said core has been heretofore made hollow and provided with inter10r pipes suitably connected with exterior water supply and exhaust pipes b which --water can be circulated through the ox during the casting operations.

The tially the same as those said patent and are not herein.

It is desirable both to prevent overheating of the core, or part with which the molten stereotype metal directly contacts, during the castlng operations and at the same time prevents suchsudden or excessive changes in temperature of such parts as shown in my aforespecifically claimed would affect the uniformity of plates cast therein. The water circulating systems heretofore employed have not given the desired results.

leading through one of the trunnions 3 and connectedto an elbow/l at the outer end of such trunnion,

and the elbow 4 is connected by a flexible pipe or hose section 4 to a pipe 5 leading lnto a reservoir or tank 6 mounted on any suitable support, as 8, at any desired eleva- .tion; The pipe 5 preferably extends into the tank to a, point above the normal water parts thus far described are substan- In applying my invention to I such a box the said core is provided with but one internal pipe 11 which communicates atbottom with a passage 3* of water therein to be determined. The me-' dium in the tank may beheated to a temperature ofapprox imately 200 F. by external means not shown, but will ordinarily be heated by contact with the core which is heated bythe'molten metal during the cast- .ing operations. When I herein refer to such medium as water I do not intend to restrict the invention to the use of water.

When the box is ready for casting a plate, the core 2 is in a' vertical position (Fig. 1) and the core and all the connections between it and the tank, below the water line '11), are filled with Water. If the water in the core or box becomes overheated during plate casting operations ,the expansion would tend to force the water back through pipes 11 and 5 into the tank but if any such action occurs immediately the pipes and core will be filled with cooler water from the tank 6.

It will be seen that with this invention the core or hollow part of the box when in operative position is filled with hot water which prevents its overheating and at the same time prevents its sudden chilling, because the water is kept at approximately boiling point during'the casting operations. A small amount of steam may collect at the top of the core during each casting operation, but if this steam pressure becomes excessive, it could, easily escape back into the tank through pipes 11, 4, 4: and 5 and be dissipated through the perforations in the pipe. In the box shown, when the core is lowered to remove the plate, as indicated in Fig. 2, this produces a mechanical agitation of the hot water upper end of the core is lowered to approximately almost the level of the trunnion 3 at which time any boiling water could readily escape through the pipes 11, 4 and 5 to the tank being replaced by cooler water. The temperature of the water in the tank will be maintained at about boiling point by the heat of the molten metal around the core at each plate casting operation; and on the other hand the temperature of the core will be maintained at an approximately uniform temperature by the body of hot water constantly maintained therein at approximately boiling point. The lowering and raising of the core causes an ebb and flow of hot water in the core each time the core is lowered to remove a plate; and I have found this sufficient in practice to maintain the core at a safe practically uniform casting temperature withoutrequiring a conin the core; and water .in the core is disturbed and shifted, and the the tank and the core, through which passage both any excessive pressure in the core will be relieved, and the supply of medium in the core be maintained.

A casting apparatus equipped with this invention can be maintained at practically any desired uniform temperature according to fluid medium used. The most practical temperature is about 200 F. which prevents overheating and is very desirable as at such temperatures the plates will not stick to the box; whereas if the box is chilled suddenly or heated irregularly the plates are chilled unequally while being cast, and therefore have to be machined before they can be used. If the core was not protected from overheating it might become so hot that the stereotype metal would adhere thereto, causing great annoyance and delay, but with boxes equipped with my invention overheating is prevented and plates can be cast as fast as the operators can manipulate the box.

What I claim is:

1. In a stereotype casting apparatus, the combination of a box having a hollow member, with an interior fluid conduit, a tank exterior to the box, and a single fluid con-.

duit connecting said tank with the conduit in the said member.

2. In a stereotype casting apparatus, the combination of a ox having a hollow tiltable member, a conduit within said member, a tank exterior to the box, and a single pipe connection between said tank and the conduit in the said member.

3. In a stereotype casting apparatus, the combination with a box having a hollow tiltable member, a pipe Within said member, a tank exterior to the box, and a single pipe connection between said tank and the pipe in said tiltable member.

4. In a stereotype casting apparatus, the

combination of a casting box having a hollow member, a pipe within and extending nearly to the upper end of said member, a tank exterior to the box, and a single fluid conduit connecting the said tank with the lower end of the pipe in the said member.

,5. In a stereotype casting apparatus, the combination of a casting box having a hol- 1,197,,ses m 10w tiltable' core, a pipe Within said .core and my own, I aflix my signature in presence of extending nearly to the upper end thereof two Witnesses. and open at its upper end, a tank exterior to the box, and a single pipe connection be- HENRY BECHMAN 5 tween the said tank and the lower end-of Witnesses:

the pipe in said core. FRANK STONE,

In testimony that I claim the foregoing as CHARLES A. GRAMns. l 

